Owen Pick has just been suspended from his job as a teacher after accusations of sexual misconduct. Searching for professional advice online, he is inadvertently sucked into the dark world of incel forums, where he meets a charismatic and mysterious figure. Across the street from Owen lives the Fours family, headed by mom Cate, a physiotherapist, and dad Roan, a child psychologist. They think Owen is a bit creepy, and their teenaged daughter swears he followed her home from the train station one night. Meanwhile, young Saffyre Maddox spent three years as a patient of Roan Fours. Feeling abandoned when their therapy ends, she searches for other ways to maintain her connection with him. Then, on Valentine’s night, Saffyre disappears --- and the last person to see her alive is Owen Pick.